Year	current US$
1960	48124879.68780078
1961	44566555.25027854
1962	32433252.250202708
1963	29691592.43768557
1964	31266588.500195414
1965	47411764.705882356
1966	54588235.29411765
1967	64588235.29411765
1968	51150000
1969	51900000
1970	60950000
1971	52550000
1972	56619047.61904762
1973	83571428.57142857
1974	114590909.09090908
1975	163583333.33333334
1976	170200000
1977	130800000
1978	104000000
1979	164400000
1980	197600000
1981	178928571.42857143
1982	120333333.33333333
1983	104666666.66666667
1984	120000000
1985	162325581.39534885
1986	202558139.53488374
1987	110306112.24489795
1988	87500000
1989	84448525.73529412
1990	123468346.83544303
1991	138587738.81932023
1992	193329055.1558753
1993	183584748.8479263
1994	147241722.34273317
1995	206558395.7746479
1996	224722649.57264957
1997	238884693.92771116
1998	207515291.7571868
1999	173674537.3543523
2000	169443794.33207256
2001	153616973.82586378
2002	151474640.8622453
2003	155687619.8228917
2004	185496259.59683824
2005	266716697.93621013